Patents by Inventor Fairl G. Henson

Fairl G. Henson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Releasable air vent pipe for use on water well covers
    Patent number: 4972905
    Abstract: An air ventilation pipe for a well casing cover is comprised of a cylindrical externally screw-threaded socket which has a cylindrical externally screw-threaded portion projecting downwardly through the aperture in a well casing cover. An enlarged head at its inner part for the engagement of a wrench. A nut for securing a cylindrical tube within the socket. The socket and nut compress between them a metallic deformable ring into sealing relationship with the cylindrical tube.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: November 27, 1990
    Inventor: Fairl G. Henson